I do this. But rather than set up an alias, I just accept *@mydomain and then filter on the bit before the @. Whenever I put my email address into any online se

I do this. But rather than set up an alias, I just accept *@mydomain and then filter on the bit before the @. Whenever I put my email address into any online service it is of the form domain.of.service.com@mydomain. Works a treat As an aside, 1Password and Fastmail seem to have tie-up call masked mail that aims to do something similar